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# File containing various utilities
# Converts a CMake list to a string containing elements separated by spaces
function(TO_LIST_SPACES _LIST_NAME OUTPUT_VAR)
set(NEW_LIST_SPACE)
foreach(ITEM ${${_LIST_NAME}})
set(NEW_LIST_SPACE "${NEW_LIST_SPACE} ${ITEM}")
endforeach()
string(STRIP ${NEW_LIST_SPACE} NEW_LIST_SPACE)
set(${OUTPUT_VAR} "${NEW_LIST_SPACE}" PARENT_SCOPE)
endfunction()
# Appends a lis of item to a string which is a space-separated list, if they don't already exist.
function(LIST_SPACES_APPEND_ONCE LIST_NAME)
string(REPLACE " " ";" _LIST ${${LIST_NAME}})
list(APPEND _LIST ${ARGN})
list(REMOVE_DUPLICATES _LIST)
to_list_spaces(_LIST NEW_LIST_SPACE)
set(${LIST_NAME} "${NEW_LIST_SPACE}" PARENT_SCOPE)
endfunction()
# Convinience function that does the same as LIST(FIND ...) but with a TRUE/FALSE return value.
# Ex: IN_STR_LIST(MY_LIST "Searched item" WAS_FOUND)
function(IN_STR_LIST LIST_NAME ITEM_SEARCHED RETVAL)
list(FIND ${LIST_NAME} ${ITEM_SEARCHED} FIND_POS)
if(${FIND_POS} EQUAL -1)
set(${RETVAL} FALSE PARENT_SCOPE)
else()
set(${RETVAL} TRUE PARENT_SCOPE)
endif()
endfunction()
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